Seal-lock.



P. BfJoHNsoN. SEAL LOOK.

1,0931 35. APPLICA'llION FILED 0OT.17, 1913. v Patente-d Apr. 14

2 SHEETS-SHEET 1.

P. B. JOHNSON.

SEAL LOCK. APPLIOATIONIILED 00T.17, 1913.

. Paiaentedv Apr. 14, 1914.

2 SHEETB-SHEET 2.

mulini/t PLANOCRAPM co..\vAsH1NC\'mN. D. C.A

"rr N s PRESLEY B. JOHNSON, 0F SACRAMENTO, CALIFORNIA.

SEAL-LOCK.

Loesnas.

To all t0/0m it may concern Be it known that I, PRESLEY B. JOHNSON, a citizen of the United States, residing at Sacramento, in the county of Sacramento and State of California, have invented certain new and useful Improvements in Seal- Locks; and l do hereby declare the following tofbe a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to seal locks and seals especially adapted for use on cars, and has for one of its objects to provide a seal lock from which it is absolutely impossible to detach the seal without breaking the latter.

Another object of the invention is to provide a seal lock including a casing, a rotary member housed within said casing and provided with means for attachment with the seal, and means for preventing a rotation of the rotary member in one direction.

A further object of the invention is to provide a novel form of seal especially adapted for use with my improved lock.

lfVith these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanying` drawings, in which- Figure 1 is a perspective view of the lock and seal, showing them in operative position, Fig. 2 is a vertical sectional view partly in elevation, Fig. 3 is a perspective View of the base plate forming a part of the lock, Fig. 4 is a section taken on the plane o-f line 4 4 of Fig. 2, and Fig. 5 is a vertical section taken on the plane of line 55 of Fig. 2.

Referring in detail to the drawings by numerals, 1 designates generally, a preferably rectangular base plate which is formed upon its inner side with a central circular recess 2, and a groove 3 adjacent the pernneter thereof. A casing, generally designated 4, comprising a front wall 5, top wall 6, bottom wall 7, and side walls 8, is positioned over the base plate 1. The inner edge of the casing is formed with a continuous rib 9 which seats within the groove 3 formed in Specification of Letters Patent.

Application led October 17, 1913.

`Patendsed Apr. 14, 1914. Serial No. 795,737.

the base, andthe side wallsof the casing are formed with apertured lugs 10 through which fastening screws 11 extend. The lugs engage the vertical edges of the base plate and cooperate with the rib 9 and groove 3 to hold said plate in operative relation with respect to the casing.

A .horizontal shaft 12 is j ournaled within openings 13 and 14 formed in the base and front wall 5 respectively and has rigidly secured thereto a drum or cylinder 15. a 'l his shaft may be rotated by means of a handle 16 secured to the forward end thereof. The peripheryof the cylinder carries a plurality of pins 17 which are adapted to extend through registering openings formed adjacent the ends of the seal 19. This seal is preferably made of a flexible strip of metal and extends through an opening 20 formed in the top wall 6 of the casing. A plate 21 is secured to the periphery of the cylinder' by means of the spring hinge 22 and is adapted to overlap the ends of the seal and hold them against the periphery of the cylinder.

To hold the cylinder against rotation in one direction l employ a ratchet wheel 23, rigid with the shaft 12 and housed within the recess 2; and a spring pawl 24 secured in the peripheral wall of said recess which engages the ratchet teeth.

'Vhen it is desired to place a seal in pusition so that the hasp 25 may not be disconnected from the staple 26 without detection, the seal is run through the staple and its ends brought together so as to bring the opening 1S into registration. Then the ends of the seal are placed in the casing through the slot 2O and the foremost pin 17 inserted through the first pair of openings 18. The cylinder is then rotated in a clockwise direction and carries the ends of the seal and the pins out of reach, as shown in Fig. 4. lVhen a person having the proper authority desires to disconnect the hasp from the staple, the seal is broken and the drum rotated so as to bring the ends oppo site the opening 2O so that they may be disconnected from the cylinder and removed, to leave the lock ready to receive another seal. The plate 21 prevents the seal dropping from engagement with the cylinder as the latter is being rotated after the seal has been broken.

From the foregoing description taken in connection with the accompanying drawings, it will be seen that I have provided a very simple and practical seal lock and seal which will make it impossible to open a door to which it is applied without break-y ing the seal. These seals may be stamped serially so that a broken seal may not be replaced by a new one without dangerl of detection.

Vhile I have shown and described the preferred embodiment of my invention, it will be understood that minor changes in construction, combination and arrangement' cylinder against rotation in one direction, a

plurality of pins carried by the periphery of the cylinder, a seal strip inserted through said opening and formed with a plurality of apertures to receive the pins, and a spring pressed plate hinged to the periphery of the cylinder to engage the ends of the strip and nasales hold said strip against the periphery of the cylinder.

2. In a seal lock, a base plate formed in its inner side with a central circular recess,

secured to the base plate around the recess formed therein, a shaft journaledthrough rigidly secured to said shaft and seated in the circular recess, a spring pawl fixed to the periphery of the recess and engaging the ratchet wheel, a cylinder rigidly secured the periphery of the cylinder, one side wall of the casing being formed with an opening, a seal strip inserted through said opening having a plurality of apertures to receive the pins and means carried by the periphery or' the cylinder for engagement with the end ment with the cylinder periphery..

In testimony whereof I affix my signature in presence ot' two witnesses.

PRESLEY B. JOHNSON. Y

Witnesses O. C. PEMBERTON, JOHN BENZ.

Copies or this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

the casing and base plate, a ratchet WheelV to the shaft, a plurality of pins carried byV a casing having a front wall and side walls of the seal strip to hold said strip in engage- 

